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Breaking Changes

  • API: 404 Not Found responses no longer include avatar_id or agent_id next to detail. The body now only contains detail. If your client reads those keys, use the ID from your request instead (API Errors)
  • API: All plan-gated features now return 402 Payment Required instead of 403 Forbidden. This covers the usage limit, avatar slots, the Call API, region pinning, message tracking, and custom branding. 403 now only means the resource is not accessible with your API key, and 429 only means the concurrency limit. If your client branches on 403 for plan restrictions, switch to 402 (API Errors)

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New Features

  • Add sending agents from Studio to ongoing Zoom, Google Meet, Microsoft Teams, and Webex meetings, with an optional Group Call mode that uses wakeup keywords (beta, paid plans, External Meetings)
  • Add support for bringing your own ElevenLabs agent: give an existing ElevenLabs Conversational AI agent a Beyond Presence avatar via the API (ElevenLabs Agent)
  • Add ElevenLabs agent setup in Studio: connect and manage ElevenLabs accounts, choose ElevenLabs Agent as the engine, and paste an agent ID or link (ElevenLabs Agent)
  • Add a ready-to-run ElevenLabs agent example to the bey-examples repository (ElevenLabs Agent)
  • Add support for speech-to-video sessions of up to 24 hours (previously 3 hours). Sessions still end after 1 hour without speech (Concurrency & Quotas)

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Updates

  • Avatars: Faster session startup and quicker first greeting in general, and faster session startup for custom avatars with a cloned voice, since the voice clone is now reused across conversations
  • Avatars: Speech-to-video sessions keep running during server maintenance instead of being interrupted
  • Agents: Wakeup Mode now wakes the agent only when someone actually speaks to it, by its name or one of its triggers. The agent always answers to its name, so an empty triggers list is now valid (Wakeup Mode)
  • Agents: ElevenLabs agents now work with every ElevenLabs audio output format, including ulaw_8000 (mu-law, used for phone calls). Your ElevenLabs agent no longer needs to output PCM audio (ElevenLabs Agent)
  • Agents: The call screen now shows when a conversation ended because it hit the time limit or idle timeout, instead of a generic failure
  • Agents: Direct conversation links now enforce your plan’s usage and concurrency limits, and show a clear message when all avatars are busy or the agent can’t take more calls (Concurrency & Quotas)
  • Agents: With message tracking turned off, conversations no longer send any data to third-party analytics or error monitoring services
  • Studio: Studio now accepts training videos up to 1GB when you create a video avatar (previously 500MB) (Custom avatars)
  • Studio: Group Call no longer requires keywords. The agent answers to its name, and keywords add extra names (Group calls)
  • API: Deleting an avatar, external API configuration or knowledge file that an agent still uses is now refused instead of breaking the agent (API Errors)
  • API: Requests that reference a missing resource now consistently return a 4xx error (API errors)
  • API: ElevenLabs API keys and agent IDs are now checked with ElevenLabs when you save them. Invalid keys or inaccessible agents return 400 right away instead of failing during a call (ElevenLabs Agent)
  • API: The error for deleting a resource that’s still in use now names the blocking agent next to its ID
  • API: Starting a session or call on an avatar that is not available yet now returns 400 right away instead of failing later
  • API: Outages of services the API depends on now return 503 instead of 500 or 403. Retry these with backoff (API Errors)
  • API: Sessions and conversations now start and end normally even when our payment provider is temporarily unavailable

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Bug Fixes

  • Fix avatar mouth moving slightly during silence
  • Fix a custom avatar’s cloned voice occasionally being deleted after a conversation
  • Fix sessions with an ElevenLabs agent not ending when the ElevenLabs conversation drops
  • Fix user messages occasionally being delivered twice in conversations
  • Fix knowledge files sometimes not being indexed after upload (Knowledge Base)
  • Fix new agents not appearing in the Studio agent list right after creation
  • Fix Studio saving agents with avatars, knowledge files, or external APIs your organization can’t use
  • Fix the upgrade plan button in Studio
  • Fix links in avatar notification emails pointing to a missing page
  • Fix sessions hanging instead of ending promptly when avatar rendering fails
  • Fix agents with non-US Google voices (for example en-IN-Neural2-B) speaking in a different voice instead of the configured one
  • Fix organizations with a past-due payment losing their plan’s limits before the subscription ends
  • Fix large chunked uploads for avatars, knowledge files, and videos occasionally failing

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Documentation

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New Features

  • Add self-service avatar creation in Studio (Custom Avatars)
  • Add multi-factor authentication (MFA) for Studio accounts
  • Add an invoices page in Studio settings with payment details and PDF downloads
  • Add support for cartesia agent TTS configs
  • Add new region: asia-south1 (India)

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Updates

  • Avatars: Faster session startup thanks to avatar prefetching and parallel downloads
  • Avatars: Reduced delay before the avatar starts speaking
  • Agents: Changed default TTS to Cartesia Sonic 3.6 (from ElevenLabs Flash 2.5)
  • Agents: Redesigned the conversation UI, including the pre-join and post-call screens
  • Agents: Improved knowledge base handling to support larger files at lower latency
  • Agents: Raised the knowledge file text limit from 100,000 to 250,000 characters (both in API and Studio)
  • Studio: Redesigned the feedback flow to be less intrusive
  • API: Renamed “Call” to “Conversation”: /v1/calls is now /v1/conversations
  • API: Renamed POST /v1/calls to POST /v1/livekit-rooms (“Create LiveKit Room”) in a new “Agent Integration” group. You only need it when embedding a conversation via a LiveKit Client SDK
  • API: Old endpoints keep working but now return a Deprecation header with a Link to their replacement

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Bug Fixes

  • Fix agents failing to start when a linked knowledge file was deleted
  • Fix Google TTS for voices other than Chirp 3 HD
  • Fix avatar audio occasionally stalling or skipping very short replies
  • Fix avatar sessions not ending cleanly when the room closes before the agent joins
  • Fix saving custom branding background URLs in Studio
  • Fix incorrect avatar slot calculation; slots now correctly follow your plan (Concurrency & Quotas)
  • Improve Studio sign-in error messages and fix a Google sign-in issue

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Documentation

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Breaking Changes

  • Retired Genesis-1 video model: calls, sessions, and videos using a Genesis-1 avatar now return 410 Gone. All existing Genesis-1 avatars were already silently upgraded to Genesis-2.

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Avatars

  • Improve avatar lip sync by giving the model full audio history
  • Improve session stability while avatar models are loading

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Managed Agents

  • Changed default OpenAI LLM to GPT 5.4 mini
  • Declare AI interaction in the pre-join screen and in-call UI (following EU AI Act Art. 50.1)
  • Fix room audio occasionally not being attached at the start of a call

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Studio

  • Added organizations with user management, role-based access control, and collaboration support
  • Text-to-Video generation now includes visible watermarks (following EU AI Act Art. 50.4)

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Documentation

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New Features

  • Add avatar emotion control for more expressive, natural conversations
  • Support agent creation with external / custom LLM config
  • Support avatar creation via direct file upload

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Studio

  • Launch new revamped Studio experience with usage analytics, mobile support, and dark theme

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Documentation

  • Update API docs
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New Features

  • Add continuous vision agents for real-time perception
  • Improve avatar idle animations
  • Add message-logging control per agent
  • Add billed-minutes usage API

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Miscellaneous

  • Add on-prem / enterprise deployment option
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New Features

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Miscellaneous

  • Improve API endpoint latency
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New Features

  • Add multi-region LLM routing
  • Complete API v2 route parity
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New Features

  • Add more speech-to-text (STT) providers for agents
  • Add external / custom LLM support for agents
  • Add Arabic (ar-SA) language support
  • Add plan-based feature gating

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Studio

  • Add video generation support for Genesis-2 avatar videos
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New Features

  • Add Delete Avatar endpoint
  • Support Genesis-2 avatar training from the dashboard
  • Add agent usage tracking
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New Features

  • Add third-party / custom TTS providers
  • Add usage analytics API
  • Improve guardrails

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Miscellaneous

  • Add region pinning for data residency
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New Features

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Miscellaneous

  • Serve downloads and previews via CDN
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New Features

  • Add session concurrency limits
  • Add conversation transcripts via API
  • Add ElevenLabs custom voice support
  • Add Webhook events

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Miscellaneous

  • Add new region: europe-west1
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New Features

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Miscellaneous

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Documentation Revamp

  • Complete documentation restructure and navigation cleanup
  • AI-powered chat integration for instant help
  • Mobile-optimized experience